Mitsubishi Electric CX series, Руководство пользователя

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B I O S S e t u p & P O S T
OWNER’S HANDBOOK 7/27
Terminal POST errors and beep codes
There are several POST routines that shut down the computer if
they fail. The BIOS sounds a sequence of beeps to identify the point
at which POST failed. The most usual errors are listed below.
The BIOS also issues one long tone followed by two short tones if
the video system is faulty or if an external ROM module (including
video ROM) fails.
Turn off the computer for 30 seconds and then try again. If the
fault persists, make a note of the error code (if any) and call your
supplier or authorised maintainer.
Beeps Port 80h Code Explanation
1-2-2-3 16h BIOS ROM checksum
1-3-1-1 20h Test DRAM refresh
1-3-1-3 22h Test Keyboard Controller
1-3-3-1 28h Autosize DRAM
1-3-3-2 29h Initialize POST Memory Manager
1-3-3-3 2Ah Clear 512 KB base RAM
1-3-4-1 2Ch RAM failure on address line xxxx
1-3-4-3 2Eh RAM failure on data bits xxxx of low byte of
memory bus
1-4-1-1 30h RAM failure on data bits xxxx of high byte of
memory bus
2-1-2-2 45h POST device initialization
2-1-2-3 46h Check ROM copyright notice
2-2-3-1 58h Test for unexpected interrupts
2-2-4-1 5Ch Test RAM between 512 and 640 KB
1-2 98h Search for option ROMs. One long, two short
beeps on checksum failure
1-2-2-3 16h BIOS ROM checksum
1-3-1-1 20h Test DRAM refresh
1-3-1-3 22h Test Keyboard Controller